Especially known from cinema, surround sound "surrounds" the listener from all angles. The most common form is Dolby Surround 5.1, using a total of 6 loud speakers (5 surround speaker and 1 subwoofer).
The exact positioning of the load speakers is as following:
* Main speaker left and right (front)* Center speaker
* Surround speaker left and right (back)
* Subwoofer (low frequency response)
The common extension called Dolby Surround 7.1 has 2 additional side speakers.
You are in the right place if you are looking for royalty-free music in surround sound.